Dams at Risk: 65-Foot Crack in Washington State Dam

A large crack has been found in the Wanapum Dam on the Columbia River which supports the utility power supply to a major cluster of data centers in central Washington state.

 

65-Foot Crack Found in Washington State Dam (Feb 25)

The 2-inch-wide crack was found Thursday after divers were sent into the Columbia River because engineers detected a misalignment in a spillway on Wanapum Dam near the central Washington town of Vantage, said Tom Stredwick, a spokesman for the Grant County Public Utility District.

The Wanapum Dam generates more than 1,000 megawatts of electricity for the Grant County PUD, the utility that provides electricity to major data centers operated by Microsoft, Yahoo, Dell, Sabey Data Centers and Vantage Data Centers.

On February 25, dam officials noticed an irregular bowing of the dam near a section of a spillgate pier along the mile-long structure. Divers examined the area Thursday and discovered a two-inch wide crack running horizontally, located about 75 feet below the water’s surface. It runs the entire width of the 65-foot-wide pier.

The risk of a failure of the dam is high enough that the county has initiated an emergency plan. To relieve pressure on the dam, the water level is being lowered by 20 feet.

Source

 

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Owen Falls Dam in Uganda Falling Apart (Feb 28)
The Owen Falls dam in Jinja could cave in, if the cracks and damage to the dam are not repaired, an official of Eskom, the hydro power generation company, has said.

Huge cracks continue to develop in the walls and supporting pillars of the dam. Water continuously sips through the gaping holes, expanding the cracks and making the dam weaker by the day.

Source

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Lake Manatee Dam at Risk of Collapse (Feb 14)

The Lake Manatee Dam in Bradeton, Florida is in a "severely distressed state" because of erosion, engineering consultants have found, forcing county officials to take corrective actions.

Heavy rains over four or five days could compromise the Lake Manatee Dam, Manatee County government warned in a news release February 14.

As a precaution, workers have begun to lower the water level of the lake.

Engineers and officials are concerned that the dam's clay core may have been compromised.

Source

 

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Water Gushes over Crumbling Dam in Zimbabwe (Feb 9)

A dam on the Tokwe river in the Masvingo area of Zimbabwe is close to bursting as water from heavy rains finding its way through gaps in the uncompleted dam wall.

Construction of the Tokwe Mukorsi dam began in 1998 but stalled in 2008. The dam was due to be completed at the end of last year but the deadline has passed with construction still not finished. Pictures from the area show water gushing through breaks in the wall and a huge build up of water in the reservoir behind it. Villagers have been evacuated as quickly as possible, with around 4,000 people believed to be at risk should the dam burst.

According to the Daily News, the Zimbabwe Air Force is helping people evacuate. The Minister for Masvingo province is quoted as saying that the government is on high alert and "A helicopter from the AFZ has been airlifting some families who were marooned by the floods but we are not yet sure how many people are still marooned."

Source

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"All dams will break either during the pole shift or in the months leading up to the hour of the shift. Look at the structure of the dam! It assumes that rock holding both sides of the dam will remain in place and not move. Of course these sides will move. This is a subduction zone! There is mountain building and even where the mountains are not being pushed upward, they are moving from side to side. Some parts are more fluid than others, which are more resistant during any earthquake thrust, so there IS inevitably movement to the side. They will pull apart, slide forward or backwards, but in any case the water will find its way around the dam." 

ZetaTalk Chat Q&A: July 18, 2009

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Comment by Starr DiGiacomo on Saturday

https://www.ntd.com/dam-collapses-in-northeast-china_511359.html

Dam Collapses in Northeast China

Sept. 25 2020

A major river in Northeast China has been struck by even more flooding. Heavy rains upstream have caused a dam to collapse—and the overflow has soaked 10,000 acres of crops.

Comment by Starr DiGiacomo on September 3, 2020 at 8:09am

https://www.mining.com/vale-reports-negative-safety-levels-in-3-dam...

Vale reports negative safety levels in 3 dams in Minas Gerais

Comment by Starr DiGiacomo on August 21, 2020 at 1:56am

https://www.dhakatribune.com/bangladesh/nation/2020/08/20/tidal-sur...

Tidal surge causes embankments to collapse, inundates villages in Khulna

Published at 06:20 pm August 20th, 2020

Around 50,000 people have been seriously affected by the sudden tidal surge inundating 12 villages in Koyra and Paikgachha

Due to active monsoon conditions, a strong tidal surge has given rise to the water levels of the Shibsa, Kapotakkho and Koyra rivers in Khulna, causing breaches in the protection embankments in the already disaster-stricken coastal district bordering the Bay of Bengal. 

Twelve villages in Koyra and Paikgachha upazila, which were already severely damaged by cyclone Amphan and recent floods this year, have once again been flooded by this tidal surge. 

As a result, around 50,000 people have been seriously affected in Kazi Para, Putihari, Harinkhola, Kashir Hat Khola, Ghatakhali, Koyra 2, Koyra 3, Gobra and Bedkashi under Koyra and Mazrabad, Bayerjhapa and Tengramari under Paikgachha.

Residents in Koyra said the Kapotakkho and Koyra rivers had been on a steady rise for the past few days. The rivers overflowed over the Ring Dam and flooded the upazila on Wednesday.

Meanwhile, a strong tidal surge in the Shibsha River breached the embankment and flooded Mazrabad, Bayerjhapa and Tengramari in Paikgachha the same day, prompting its residents to spend the whole night repairing the river embankment themselves.

It has been three months since the horrific cyclone Amphan wreaked havoc in Koyra and Paikgachha and its residents have not yet been able to return to normal life. As of Thursday, every house in these two upazilas was submerged in at least 3-4ft of floodwater.

Koyra Upazila Parishad Chairman Shafiqul Islam said the dams at Ghatakhali, Koira 2 and 3 had collapsed due to a sudden tidal surge, inundating nine villages. “Locals are working to repair the embankment to protect their homes.”

Koyra Upazila Nirbahi Officer Animesh Biswas said: “Necessary repairs will be possible on the affected embankments once the high tide recedes. For now, sandbags are being provided for voluntary embankment protection work.”

Meanwhile, due to high tides, the already dilapidated Wapda embankment in Bayerjhapa also collapsed, flooding a vast region in Mazrabad, Bayerjhapa and Tengramari on Wednesday.

As a result, at least 250 shrimp enclosures were washed away and 15,000 people were subjected to serious waterlogging issues.

Soladana Union Parishad Chairman SM Enamul Haque said that locals had worked till late Wednesday night and repaired the collapsed embankment in Bhangaharia.

Paikgachha Upazila Nirbahi Officer ABM Khalid Hossain Siddiqui was present at the spot and provided encouragement to the people.

Md Fariduddin, deputy assistant of the Khulna Water Development Board, said: “The dam had been repaired four times before by both administration and local efforts. But due to lack of sustainable repairs, the dam collapses repeatedly, causing tidal water to enter Paikgachha. Meanwhile, Tk3 lakh has been allocated for repairing the permanent dams.”

Paikgachha UNO ABM Khalid Hossain Siddiqui said: “The tidal water has stopped entering the affected areas since the embankment was repaired through local efforts on Wednesday night. Emergency measures will be undertaken to establish sustainable dams here.”

It has been three months since the horrific cyclone Amphan wreaked havoc in Koyra and Paikgachha and its residents have not yet been able to return to normal life. As of Thursday, every house in these two upazilas was submerged in at least 3-4ft of floodwater.

Koyra Upazila Parishad Chairman Shafiqul Islam said the dams at Ghatakhali, Koira 2 and 3 had collapsed due to a sudden tidal surge, inundating nine villages. “Locals are working to repair the embankment to protect their homes.”

Koyra Upazila Nirbahi Officer Animesh Biswas said: “Necessary repairs will be possible on the affected embankments once the high tide recedes. For now, sandbags are being provided for voluntary embankment protection work.”

Meanwhile, due to high tides, the already dilapidated Wapda embankment in Bayerjhapa also collapsed, flooding a vast region in Mazrabad, Bayerjhapa and Tengramari on Wednesday.

As a result, at least 250 shrimp enclosures were washed away and 15,000 people were subjected to serious waterlogging issues.

Soladana Union Parishad Chairman SM Enamul Haque said that locals had worked till late Wednesday night and repaired the collapsed embankment in Bhangaharia.

Paikgachha Upazila Nirbahi Officer ABM Khalid Hossain Siddiqui was present at the spot and provided encouragement to the people.

Md Fariduddin, deputy assistant of the Khulna Water Development Board, said: “The dam had been repaired four times before by both administration and local efforts. But due to lack of sustainable repairs, the dam collapses repeatedly, causing tidal water to enter Paikgachha. Meanwhile, Tk3 lakh has been allocated for repairing the permanent dams.”

Paikgachha UNO ABM Khalid Hossain Siddiqui said: “The tidal water has stopped entering the affected areas since the embankment was repaired through local efforts on Wednesday night. Emergency measures will be undertaken to establish sustainable dams here.”

Comment by Starr DiGiacomo on August 16, 2020 at 12:18am

https://www.newindianexpress.com/states/odisha/2020/aug/15/rain-tri...

Rain triggers check dam collapse

One injured after wall of a shop caves in due to heavy rain at Kamarguda in Chitrakonda.

15th August 2020 08:36 AM

MALKANGIRI: Incessant rains since the last few days continued on Friday disrupting normal life in the district.A six-metre high dam of the minor irrigation project at Patraput under Mathili block collapsed due to heavy rains. Floodwater submerged standing crops in nearly 30 acre of farmland on the downstream. Minor Irrigation Executive Engineer Sushil Sahu said efforts are on to repair the dam soon.

Similarly, four houses in Champajharan and Miliguda villages under Mathili were damaged due to rain. Communication was disrupted on Mathili road after an uprooted tree blocked vehicular movement on the day.Movement of vehicles was also disrupted on NH-326 between Malkangiri and Jeypore as rainwater flowed 3-4 feet over Pangam bridge. Till reports last came in, water was flowing over the bridges at MV-90 and MV-96 under Kalimela block and Kanyashram of Podia.

On Thursday night, one Kamala Pangi sustained injuries after the wall of a shop collapsed on her due to heavy rain at Kamarguda junction under Chitrakonda block. Kamala was sleeping inside the shop when the mishap took place. Her father Santosh Pangi urged the district administration for relief and Government assistance.

In the last 24 hours, the district received 490.4 mm rainfall. Chitrakonda block reported the highest rain of 130 mm followed by Korukonda (97 mm), Khairput (84 mm) and Podia (63.5).

Comment by Starr DiGiacomo on August 2, 2020 at 5:59am

https://headtopics.com/sg/hundreds-of-homes-destroyed-after-sudan-d...

'Hundreds' of homes destroyed after Sudan dam collapse

KHARTOUM (AFP) - Hundreds of homes were destroyed or flooded this week as a dam burst after heavy rain in Sudan 's Blue Nile state, a local official said on Saturday (Aug 1).. Read more at straitstimes.com.

The dam collapsed on Thursday in the district of Bout in the southeastern state,"destroying more than 600 homes and flooding others", Nousseiba Farouk told AFP by phone.Residents successfully evacuated their homes, she said.Local media said the dam held five million cubic metres of water, used for both agriculture and drinking.

"We don't yet have an exact idea of the damage because we have not been able to reach the flooded area," Farouk added.

another link:

https://africa.cgtn.com/2020/08/01/dam-collapse-destroys-600-houses...

Dam collapse destroys 600 houses in Sudan

A sudden collapse of a dam in Sudan’s Blue Nile State has destroyed 600 houses, local Sudanese media reported on Friday.

“Over 600 houses in the neighborhoods of Bout town in Blue Nile State have been destroyed due to a sudden collapse of Bout dam which is used to store around 5 million cubic meters of water coming from the valleys of Al-Angsana Mountains,” local media quoted Nusaiba Farouq Kalol, acting executive director of Al Tadamun locality in Sudan’s Blue Nile State, as saying.

“The water surrounded another 600 families in a neighbourhood, with no access to them as the water flooded the area from three directions,” she added.

The local official warned against a big wave of displacement in the area, noting that the Bout dam constitutes the backbone for the area where there is a large market and more than nine basic education schools.

Annually during June and July, Sudan witnesses waves of floods due to heavy rains.

On Thursday, Sudan meteorological authorities warned of medium to heavy rains, accompanied by high-speed winds on Friday that would continue until Saturday afternoon, in various parts of the country.

Comment by Starr DiGiacomo on July 25, 2020 at 7:21pm

https://news.abplive.com/uncut/off-the-record-with-pankaj-jha/bihar...

Bihar Flood: Large Scale Devastation In Gopalganj After Dam Collapse, Had To Vacate Many Villages | Bihar Uncut

Updated : 24 Jul 2020 09:55 PM (IST)
Bihar Flood Update: A dam built on the Gandak river in Gopalganj district collapsed this week. Many villages were washed off due to the floods caused by this collapse. Floods in Bihar is not a new phenomenon, it happens every year. Every year, floods cause huge losses to human lives and property alike. Governments announce flood relief funds every year. Some people receive these funds, while many don't. Post-floods, everything is devastated and dilapidated. Watch this report by ABP News' political editor, Pankaj Jha on the state of Bihar floods.
Comment by Juan F Martinez on July 24, 2020 at 4:19pm

Expert: Three Gorges Dam Could Collapse | NTD  | Three Gorges Dam is breaking apart. 7/23/2020

https://youtu.be/n6QyfrS7ARI

Comment by Starr DiGiacomo on May 26, 2020 at 3:30am

https://www.roanoke.com/news/local/landslide-caused-by-heavy-rains-...

Landslide caused by heavy rains damages Philpott Dam

As of 5 p.m. this afternoon, Appalachian Power reports 105 customer in Henry County without power and 13 in Patrick County.

The largest outage involves 92 customers on the east side of Greensboro road just south of William F. Stone Highway and includes Villa Road, Wilde Street, Windover Street, Sinclair Street and Marrowbone Circle.
Estimated restoration to the largest area is 10 p.m. tonight. Isolated areas are expected to take longer.
UPDATE:
12:09 p.m.
The U.S. Army Corps of Engineers reports that heavy rains Sunday triggered a landslide next to and downstream of Philpott Dam in Bassett. No injuries have been reported.
The landslide, which damaged the switch house and the transformers area, caused a temporary power outage at the dam when it damaged the backup generator.
Crews remain on site to restore power to the dam so that it can continue to control the release of water, the Army Corps of Engineers reports. There are no anticipated downstream impacts, according to reports.

BASSETT -- Emergency workers rushed to Stanleytown Health and Rehab on Sunday night, and homes in the Bassett area reportedly were evacuated as a steady downpour brought what was called "historic flooding" along the Smith River in Henry County.
The National Weather Service in Blacksburg issued a Flash Flood Emergency – more severe than a warning – about 10:20 p.m. that will remain in effect until 6:45 a.m. Monday. It applies to Martinsville, Henry County and Franklin County. Henry County also declared a state of emergency.
Flood waters are moving down the Smith River, and the river may not crest for several more hours, the NWS said in its alert.
Water was shown to be over the top of at least one bridge across the Smith River in the Bassett area.
The Smith River gage at Bassett has reported a stage of 12.5 feet for the past two hours and may be malfunctioning, the NWS said.
About a half of inch of water rose into Stanleytown Health & Rehab, located at 240 Riverside Dr. in Bassett.
Emergency vehicles, including rescue boats, arrived on the scene, but by about 10 p.m. a possible evacuation was stopped, and first responders departed.
Significant other flooding in the region threatened the homes of some residents, with several having been flooded by what the NWS termed “is now believed to be historic flooding.”
An emergency evacuation center was opened at Bassett High School.
The alert said the flooding is life-threatening and recommended those in low-lying areas seek shelter. This would include low water crossings, creeks, streams and underpasses in the city.
The flood waters are moving down the Smith River, the advisory said, and may not crest for several more hours.

Comment by Starr DiGiacomo on May 23, 2020 at 1:41am

https://wtop.com/virginia/2020/05/rains-spark-fears-that-va-dam-wil...

Rains spark fears that Va. dam will fail, 13 homes evacuated

May 21, 2020, 8:46 AM

ROANOKE, Va. — People living in 13 homes in southwestern Virginia have received an evacuation order because a dam may fail from heavy rains.
The Roanoke Times reported Thursday that the homes are in southwest Roanoke and near the Spring Valley Dam. The dam forms a creek-fed lake called Spring Valley Lake.
People living downstream received phone calls from the city. But the city said that Roanoke Fire-EMS personnel also went door to door.
Roanoke’s Stormwater Utility’s online precipitation app said the area has received 7.6 inches of rain since Tuesday.

another article:

https://www.nytimes.com/2020/05/21/climate/dam-failure-michigan-cli...

‘Expect More’: Climate Change Raises Risk of Dam Failures

Engineers say most dams in the United States, designed decades ago, are unsuited to a warmer world and stronger storms.

May 22, 2020, 10:08 a.m. ET

The dam that failed in Central Michigan on Tuesday gave way for the same reason most do: It was overwhelmed by water. Almost five inches of rain fell in the area in the previous two days, after earlier storms had saturated the ground and swollen the Tittabawassee River, which the dam held back.

No one can say yet whether the intense rainfall that preceded this disaster was made worse by climate change. But global warming is already causing some regions to become wetter, and increasing the frequency of extreme storms, according to the latest National Climate Assessment. The trends are expected to continue as the world gets even warmer.

That puts more of the nation’s 91,500 dams at risk of failing, engineers and dam safety experts said.

“We should expect more of these down the road,” said Amir AghaKouchak, a professor of civil engineering at the University of California, Irvine. “It’s unfortunate but this is what the trend is going to be.”

Comment by Starr DiGiacomo on May 20, 2020 at 4:12am

https://www.cnbc.com/2020/05/19/1-michigan-dam-breached-another-at-...

Michigan dam breached, another at risk amid Midwest floods

May 19 20208:59 PM EDT

And for those who don't realize it, that little red brick house is the dam control station with all three floodgates wide open. That is not a breach...that is a life changer!

The evacuations in Michigan followed days of heavy rains in parts of the Midwest that also brought flooding to Chicago and other parts of Illinois, Ohio and other states.
Heavy rains also caused flooding in parts of northwestern Indiana, including Crown Point — the Lake County seat — where about seven inches fell over the weekend.

People living along two lakes and a river in mid-Michigan rushed to evacuate Tuesday after the breach of a dam following days of heavy flooding across parts of the Midwest.
Two schools were opened for evacuees in the Midland area, about 140 miles north of Detroit, after the breach of Edenville Dam, which holds back Wixom Lake.

Red Cross worker Tom Restgate, who had been helping residents of the area seek shelter from the threat of rising waters, said he received an alert over his cellphone that “the dam ... it breached.”
Residents in a span of several miles were urged to evacuate. Officials also were watching the Sanford Dam south of Edenville. The city of Midland, which includes the main plant of Dow Chemical, sits on the banks of the Tittabawassee River about 8 miles away from that dam.
More than 50 roads have been closed in the area. The evacuations in Michigan followed days of heavy rains in parts of the Midwest that also brought flooding to Chicago and other parts of Illinois, Ohio and other states.
“The water is very high,” Catherine Sias, who lives about a mile from the Edenville Dam, said before the breach. “Last night, emergency responders came door-to-door to make sure everybody got out. We have mild flooding every year, but this is unusual.”
Sias, 45, has five cats and two dogs and was about to check into a hotel that allowed pets when she learned it was probably safe for people not living in low-lying areas to return home.

“I’m on the high bank, about 20 feet up,” she said. “A lot of people are having a harder time. Most of them are going to be dealing with flooding in their homes.”
Some residents, such as Jon St. Croix, went to shelters set up in area schools.
“We were laying in bed when I heard sirens,” St. Croix told the Midland Daily News. “A fire truck was driving around, broadcasting that (we needed) to evacuate. It’s a scary thing — you’re sleeping and awake to sirens.”
St. Croix, 62, his wife and a next-door neighbor were among more than a dozen people sheltering in one school. Their home was not flooded, but St. Croix said he had seen flooding in the area.
Volunteers at the schools said about 120 vehicles were in the parking lots of a couple of schools and about 30 people had been staying on cots inside, according to WNEM-TV.
About a dozen people hunkered down overnight at a school in Sanford but had left by early Tuesday afternoon, said Tom Restgate, an American Red Cross safety officer.

story continues...

https://weather.com/news/news/2020-05-19-severe-weather-impacts-mic...

Dam Fails in Central Michigan; Evacuations Underway

Residents in two central Michigan towns were told to evacuate immediately Tuesday evening after floodwaters caused a dam to fail.
Emergency officials in Midland County, about 150 miles north of Detroit, had earlier warned residents along Wixom and Sanford lakes that the Edenville Dam was in danger of failure. They told residents to leave immediately around 6:15 p.m. EDT when the dam could no longer hold back the water flowing through its flood gates.

A dam failed in Edenville, Michigan, and another one nearby was also in danger.
People in parts of several central Michigan counties were told to leave their homes.
About 50 people were helped out of their homes in Westerville, Ohio.
Residents in a Kentucky town were advised to leave their homes.

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